Pool Heating Costs: Gas vs Heat Pump vs Solar in Brisbane

Brisbane's pool season is long without heating — most clients swim from October through April happily on solar gain alone. But adding heating extends that to genuinely 12 months of swimming, and a lot of people decide that's worth it.

Three options. They all heat pools. They cost very different amounts to buy, install, and run. Here's the honest comparison.

Gas heaters

Upfront cost: $4,500-$6,500 supplied and installed for a typical family pool.

Running cost: Quick to heat (2-4 hours from cold) but expensive in fuel. Heating a 6×4m family pool from cold typically uses $40-$70 of gas. Maintaining a heated pool through winter: $300-$600 per month if heated full-time.

Best for: Owners who want pool warm on demand for occasional use. Spas. Pool parties. Quick weekend warm-ups in winter.

Not great for: Daily swimming through winter. The running cost adds up.

Heat pumps (electric)

Upfront cost: $5,500-$9,000 supplied and installed depending on size.

Running cost: Slow to heat (24-48 hours from cold) but very efficient once at temperature. Maintaining a heated 6×4m pool: $80-$200 per month depending on tariff and weather.

Best for: Owners who want consistent winter swimming. Set and forget. Best value over a full season of use.

Not great for: On-demand fast heating (use gas for that). Can struggle below about 10°C ambient — Brisbane is fine, regional QLD higher altitudes might not be.

Solar (roof panels + circulation pump)

Upfront cost: $3,500-$6,500 depending on roof access and panel area.

Running cost: Just the small circulation pump — about $5-$15 per month additional electricity. Heating itself is free from the sun.

Best for: Extending the shoulder seasons (April-May and Sept-Oct). Daytime sun-heated swimming. Owners with good north-facing roof area.

Not great for: Genuine winter swimming. Solar barely keeps up in July-August. Cloudy days. Night swimming (water cools fast).

The honest recommendation

For most Brisbane families: skip heating in year one. See how you actually use the pool. Most homes get plenty of use without heating because Brisbane's seasons are gentle.

If you decide you want winter swimming after a year of ownership, retrofit a heat pump. It's the best value for genuine cold-water heating, and retrofitting is straightforward (plumbing tee-in, electrical run, mount on a slab).

If you want fast warm-up for occasional use (think: birthday parties in August), a gas heater is the right answer. Don't run it full-time.

Solar is fantastic for shoulder seasons and pairs beautifully with heat pumps if you can afford both. The combination — solar for free heating in shoulder months, heat pump for boost in winter — is the gold standard.

Heating retrofitted vs at build

Slightly cheaper to install at build time because we're already running plumbing and electrical, but the difference is only about $500-$1,000. Don't rush a heating decision just because it's quote time. Order without, see how you swim, add later if needed.

If you're including a spa in your build, that's a different conversation — spas need heating to be useful. We always recommend electric heat pump for integrated spas.

One regional caveat

If you're in the Granite Belt, Toowoomba, or Scenic Rim hills (we work in all these areas), winter is genuinely colder and the calculations shift. Solar is less effective. Heat pump still works but uses more energy. Worth specifying at the quote.

If you want to discuss heating options for your specific pool and yard, talk to us. We'll tell you honestly what we'd choose for your situation.

— Mike